Answer: 1200 mL.
- A 300 mL
- B 600 mL
- C 1200 mL
- D 1800 mL
Correct answer: C. 1200 mL
Explanation: By Charles Law, V<sub>1</sub>/T<sub>1</sub> = V<sub>2</sub>/T<sub>2</sub>: 600/300 = V<sub>2</sub>/600, so V<sub>2</sub> = 1200 mL.

Boyle's law: at constant temperature the pressure of a fixed mass of gas is inversely proportional to its volume (P ∝ 1/V), so the P–V plot is a hyperbola — halving the volume doubles the pressure. Image: Reginaprice2013, CC BY-SA 3.0, via Wikimedia Commons.
Concept context
Discover why gases expand to fill any container while liquids flow and solids hold their shape. Master the gas laws, the ideal gas equation, and the reasons real gases deviate from ideal behavior.